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- 802.11n: MIMO really needs smart antennas
- As Wi-Fi standards go, 802.11n has a lot to live up to, especially after hearing how 802.11n's advertised throughput, security, and reliability will allow Wi-Fi to replace existing wired networks. This means 802.11n's RF technology needs to be rock-solid, just like Ethernet cables, while facing ever-changing environmental conditions. ...
- Tags: Device, Network, Signal, IEEE 802.11n, Interference, MIMO, Technology, Antenna, RF, Ruckus Wireless, Antenna Diversity, N, Beamforming, BeamFlex, Path Control Module, Ruckus, Wi-Fi, Wireless LANs, Wireless, Michael Kassner
- Blog posts 2008-05-14
- iMAT: MIMO without multiple antennas
- Antenna systems are not normally a preeminent topic when it comes to discussions about wireless equipment. That attitude is completely understandable; antennas are just not that interesting to most people. To some, including myself, RF propagation and antenna technology are very worthy discussion topics. My fascination started 40 years ago...
- Tags: Situation, MIMO, Antenna, iMAT, Antenna System, RF, EM, EM Isolation, SkyCross, iMAT Antenna System, Michael Kassner
- Blog posts 2008-02-25
- Metamaterial: the unnatural composite is transforming wireless technology
- I get excited when I read about how scientists are able to create experimental conditions that do not occur normally in nature. Recently I was digesting an article on the PhysicsWorld website about how physicists have developed a method using a new class of materials called metamaterial to bring light...
- Tags: Propagation, Wireless Technology, MIMO, Technology, EM, RF, Wi-Fi, Wireless, Michael Kassner
- Blog posts 2008-02-12
- 802.11n equipment is morphing to meet new demands
- Others have presented the idea that equipment based solely on 802.11n will not adequately support emerging applications. If the technology displayed at this year’s CES is any indication, Wi-Fi chip and equipment developers are beginning to agree with this assessment. New applications mean new requirements ...
- Tags: Algorithm, Broadcom Corp., Network, IEEE 802.11n, Equipment, Atheros Communications, Chip, 802.11n Equipment, RF, Lenno, Wi-Fi, Wireless LANs, Wireless, Michael Kassner
- Blog posts 2008-01-23
- How to make the best of 802.11 multipath environments
- In a post titled Wi-Fi 101: Multipath environments and how they affect Wi-Fi propagation, I examined what happens to 802.11 RF signals when they encounter physical obstacles. I would like to take the next logical step and develop quantifiable relationships between three different Line of Sight LoS environments and the...
- Tags: IEEE 802.11, Environment, Technology, Antenna, RF, Free Space Path Loss, Multipath Interference, Diversity Scheme, Receiver, Wireless LANs, Wi-Fi, Wireless, Michael Kassner
- Blog posts 2007-10-30
- Wi-Fi 101: Multipath environments and how they affect Wi-Fi propagation
- Ever wonder why moving your computer or changing the direction of your Wi-Fi antenna can make such a difference in signal strength? In this Wi-Fi 101 lesson, I explain how RF signals-especially Wi-Fi ones-react to real world conditions. RF terminology Before I jump into a discussion on multipath...
- Tags: Signal, Environment, Propagation, WLAN, Multipath, Anomaly, RF, Propagation Anomaly, Wireless LANs, LANs, Wi-Fi, Wireless, Networking, Michael Kassner
- Blog posts 2007-10-18
- Is network security at risk with wireless access points?
- Is network security at risk with wireless access points?I want to install wireless 802.11g access points in our warehouse to upgrade the RF scanning equipment. Management has expressed concerns that this wireless equipment could be a dangerous weak link in our network security. As long as the access...
- Tags: 802.11g, access point, access points, CompHelpNJ, LAN, network, network security, networking, rf, security, wireless, WLAN
- Discussion threads 2005-12-10
- New options for connectivity
- Solving connectivity problems can be tricky when a department in your organization relocates to a nearby building. Ramon Padilla makes the case for a wireless solution. Get acquainted with wireless bridging and its options in this article. Have you ever been faced with the situation in which an ...
- Tags: Wi-Fi, Ramon Padilla Jr., Network technology, microwave, wireless, line of sight, beam, Government IT Newsletter, TechRepublic Inc., Drawback, WLAN, RF, Frame Relay, Networking
- Technical articles 2005-06-13
Additional Resources
- A great book about RF circuit design just got better
- The implication here is that digital is RFDigital is pulses of DC and RF is that analog sine wave stuff.My first question would be how can anybody multiplex DC on to AC.I'd have to see the wave.Not neccissarily related...That is kind of what you are doing with DC loading of...
- Tags: PRODUCTIVITY, PCI, Continuous Wave
- Discussion threads 2008-03-24
- A great book about RF circuit design just got better
- Christopher Bowick and his book RF Circuit Design have been helping people understand the intricacies of RF design for almost 25 years. Well, Mr. Bowick has stepped it up a notch by creating a second edition with new information. The following synopsis of the book mentions the new areas covered...
- Tags: Noise Figure, Noise Factor, Wi-Fi, Wireless, Bluetooth, Michael Kassner
- Blog posts 2008-03-24
- RF interference: Just how important are antennas
- Once again another Good Article.- You just keep them comming, don't you? Well I, for one, am glad of it. While most of that is still above my head, I just don't have enough time, or the the reason, anymore, I still learn from your articles. It's good that's there's...
- Tags: Advertising & Promotion, Adaptive Beamforming
- Discussion threads 2008-06-15
- RF Design and Wireless System Architecture With RF Toolbox & RF Blockset
- Model-Based Design enables engineers to complete their projects faster and with less risk of design flaws. The RF Blockset and the RF Toolbox expand the scope of Model-Based Design for wireless communications. Both products enhance the functionality of The MathWorks industry-leading software environments MATLAB and Simulink by providing a broad...
- Tags: Wireless Communication, MathWorks, Wi-Fi, Wireless
- Webcasts
- RF Design and Wireless System Architecture With RF Toolbox and RF Blockset
- Model-Based Design enables engineers to complete their projects faster and with less risk of design flaws. The RF Blockset and the RF Toolbox expand the scope of Model-Based Design for wireless communications. Both products enhance the functionality of The MathWorks industry-leading software environments MATLAB and Simulink by providing a broad...
- Tags: Wireless Communication, MathWorks, Wi-Fi, Wireless
- Webcasts
- Rf Engg.
- I am Rf Engg. at the post OptimizorSounds like a nice boy to me, just wanting to ...Meet someone with like-minded interests.Maybe TR has started a Matchmaking Service! :^0CongratulationsI'm sure you're very proud.HowLong you think he will last ?I'm sure he'll never come here again .Personals?So is "rf engg",...
- Tags: Rf Engg
- Discussion threads 2009-01-22
- RF Scanners and VB .Net
- hi,i need to write a retail picking system that will use rf scanners and vb.net. Here's a scenario... a customer places an order on the internet, that order is transfered to the relevant store via a webservice and is merged into a mysql db and displayed on the client pc...
- Tags: Scanners, Microsoft Visual Basic, scanner, picker
- Discussion threads 2008-03-06
- RF Optimisation and Planing
- I am a RF Engg.,I want to know in detail about RF optimisation and RF Planning....
- Discussion threads 2008-11-05
- RF modem
- i want know what is Rf modem and how it working in ispRadio Frequency ModemA RF modem can typically support serial protocols, similar to a typical dial-up modem but using RF as the Physical layer. In practice, many also support Ethernet, in which case the device is also...
- Tags: Modems, Network technology, modem
- Discussion threads 2008-01-23
- RF Transceiver of WiMAX Base Station for 802.16d
- The design of a RF transceiver for WiMAX base station based on IEEE 802.16d standard using OFDM technology is presented in this paper. The RF transceiver operates in 700MHz frequency band, and employs dual-conversion configuration and FDD mode. The experimental results show that the RF transceiver has perfect performance for...
- Tags: IEEE, RF Transceiver, WiMAX, Wi-Fi, OFDM, Wireless And Mobility
- White papers 2008-04-08
- The PSP Model in RF CMOS Design
- While the Penn State Philips PSP transistor model is rightly hailed as an excellent alternative to traditional BSIM models for RFIC design, RF designers need to be aware of how PSP models relate to actual device behavior. PSP models do require some judgment on the part of model developers. Equally...
- Tags: Fujitsu Ltd., Sony PlayStation Portable, Model, Research & Development, Productivity, Semiconductors, Business Operations, Hardware
- White papers 2009-03-01
- Want to see rm -rf command in progress?
- Sometimes people throw watermelons off thirty-story buildings just to see what they look like on impact (if you've ever watched David Letterman, you know what I mean). In response to that dark human desire to wreak havoc and watch disasters unfold before our eyes, a blogger over at fsckin w/...
- Tags: Linux, Corporate Communications, Blogging, UNIX, Operating Systems, Software, Marketing, Internet, Selena Frye
- Blog posts 2007-11-01
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